CVE-2012-5306 in DCS-5605
Summary
by MITRE
Stack-based buffer overflow in the SelectDirectory method in DcsCliCtrl.dll in Camera Stream Client ActiveX Control, as used in D-Link DCS-5605 PTZ IP Network Camera, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long string argument.
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Analysis
by VulDB Data Team • 08/05/2024
The vulnerability identified as CVE-2012-5306 represents a critical stack-based buffer overflow flaw within the DcsCliCtrl.dll ActiveX control component of D-Link's DCS-5605 PTZ IP Network Camera product line. This vulnerability exists specifically within the SelectDirectory method of the Camera Stream Client ActiveX Control, which is designed to facilitate user interaction with camera directory structures through web-based interfaces. The flaw stems from inadequate input validation mechanisms that fail to properly constrain the length of string arguments passed to the vulnerable method, creating an exploitable condition where malicious inputs can overwrite adjacent memory locations on the program stack.
The technical implementation of this vulnerability aligns with CWE-121 Stack-based Buffer Overflow, where the buffer overflow occurs in stack memory allocated for local variables within the function execution context. When an attacker supplies an excessively long string argument to the SelectDirectory method, the ActiveX control processes this input without proper bounds checking, allowing the data to overflow into adjacent stack memory regions. This overflow can corrupt the return address of the calling function, potentially redirecting execution flow to malicious code injected by the attacker. The vulnerability's exploitation potential extends beyond simple denial of service to include arbitrary code execution, making it particularly dangerous in networked environments where remote code execution capabilities can be leveraged for complete system compromise.
The operational impact of CVE-2012-5306 manifests in several critical security implications for organizations utilizing D-Link DCS-5605 cameras in their network infrastructure. The vulnerability creates a persistent threat vector that can be exploited remotely without requiring authentication, as the ActiveX control is typically accessible through web interfaces that are exposed to external networks. This makes the camera an attractive target for attackers seeking to establish persistent access points within network perimeters, particularly in scenarios where these devices are deployed in corporate or industrial environments with limited security controls. The potential for remote code execution through this vulnerability enables attackers to install backdoors, exfiltrate sensitive data, or use the compromised device as a launch point for further attacks against internal network resources.
Mitigation strategies for CVE-2012-5306 should prioritize immediate remediation through official firmware updates provided by D-Link, as these patches typically address the underlying buffer overflow conditions through proper input validation and memory management controls. Network segmentation and access control measures should be implemented to limit exposure of vulnerable ActiveX controls to untrusted networks, while disabling unnecessary ActiveX functionality where possible. Security monitoring should focus on detecting anomalous network traffic patterns associated with exploitation attempts, particularly those involving long string arguments being passed to directory-related methods. The vulnerability demonstrates the importance of implementing defense-in-depth strategies, as outlined in the mitre ATT&CK framework's application of techniques such as T1059 Command and Scripting Interpreter and T1203 Exploitation for Client Execution, which emphasize the need for multiple layers of security controls to protect against active exploitation of client-side vulnerabilities. Organizations should also consider implementing web application firewalls and network access control policies to prevent unauthorized access to vulnerable network camera interfaces.